Fits files cannot be recognized in Deep Sky Stacker or SIRIL

Astro-Fiasco

Hello

Recently acquired the Asiair Plus and the 533MC. Got the imaging session up and running no problem, but when I try to import the images into either Deep Sky Stacker or SIRIL, each program cannot read the Fits files.

Files look like this...
Light_IC2177_300.0s_Bin1_20230129-212524_0001

Deep Sky Stacker error : returned a status of 104, error text is: "could not open the named file"

Now Ive got no problem stacking in AsiStudio. Im just wanting a little more control over the whole process.

Thanks in advance

w7ay

Astro-Fiasco Light_IC2177_300.0s_Bin1_20230129-212524_0001

Are you sure there is no file type like ".fit" after the filename?

If the filename is really missing the ".fit" suffix, try changing the name of your file to include the suffix and see if the other programs can now recognize the files.

Chen

Astro-Fiasco

w7ay

Thank you so much....I can't believe I did not notice that on the file name. It's weird...opening the file in Deep Sky Stacker...the.fit is not there. When I look in the same folder where the files are located, .fit is on the end. I am now more confused even.

w7ay

Astro-Fiasco When I look in the same folder where the files are located, .fit is on the end.

The file name string may be too long for the program. Or that dot in "300.0".

Make a copy of that file, then change the name of the copy to something short and simple like "image.fit", with no other dot before the dot in ".fit". If it works, you can add the dot to see if it is the dot or the long name that confused the program.

Good luck,
Chen

Astro-Fiasco

w7ay Thank you Chen. So I took your recommendation and performed those steps, and none of it worked unfortunately. I keep getting the same error. I will keep trying.

w7ay

Astro-Fiasco I keep getting the same error.

Wow, could it be an ill formed FITS Header information, perhaps?

Can you use a program (even ASIFitsView) to extract the FITS header and post the header here? Collectively someone on this forum might have an idea.

If you are on macOS, perhaps you can try something (which I am sure uses the libcfitsio library from NASA) like Affiity Photo to try to read that FITS file? If Affinity Photo does not read the FITS file, it is a bogus FITS file.

The first line of the FITS file should be ASCII text that contain the keyword "SIMPLE", like this:

SIMPLE = T

On macOS, you can just use the command line command in Terminal, like

% more image.fit

Here are the other mandatory keywords:

https://archive.stsci.edu/fits/fits_standard/node39.html

Chen

PiPiCherry

I had the same issue that a fits fill could not be opened. I found the problem is that my disk name is not in English, and after I change everything to English, it works.
So maybe you can check if everything from the disk name to the folder name is in English.